Lumbar degenerative disc disease refers to the symptoms of lower back pain and/or radiating pain, numbness or weakness in the legs stemming from a degenerated spinal disc. Cervical Degenerative Disc Disease Video. Neck pain and stiffness may be the result of cervical degenerative disc disease.umbar degenerative disc disease refers to the symptoms of lower back pain and/or radiating pain, numbness or weakness in the legs stemming from a degenerated spinal disc. Cervical Degenerative Disc Disease Video. Neck pain and stiffness may be the result of cervical degenerative disc disease.
Nearly every cell in a personâs body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA). The information in DNA is stored as a code made up of four chemical bases: adenine (A), guanine (G), cytosine (C), and thymine (T).
Components of DNA. DNA is a polymer. The monomer units of DNA are nucleotides, and the polymer is known as a polynucleotide.. Each nucleotide consists of a 5-carbon sugar (deoxyribose), a nitrogen containing base attached to the sugar, and a phosphate group.There are four different types of nucleotides found in DNA, differing only in the nitrogenous base.The four nucleotides are given one letter abbreviations as shorthand for the four bases.he monomer units of DNA are nucleotides, and the polymer is known as a polynucleotide.. Each nucleotide consists of a 5-carbon sugar (deoxyribose), a nitrogen containing base attached to the sugar, and a phosphate group.